Thyreoglobulin level rises from 3.2 to 6.8 in 4 months

Hugi Member Posts: 1

Hi everyone, I am new to this site. Have PTC and MTC, BRAF positive. Have Garve’s and TED. I am intolerant to RAI. Had TT last April, since then monitored, CEA is 0.5 (for Medullary carcinoma it looks good), byt S-Tgyl is on the rise from 3.2 to 6.8 in 4 moths. Is this mets or can it be becouse of Biotin pills I take for Grave’s? Thank you for your help!